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Max Kellermann authoredThe `tag_builder.empty()` check was wrong for the SubmitReplayGain() call. Closes https://github.com/MusicPlayerDaemon/MPD/issues/497 1aa7cdd6
The `tag_builder.empty()` check was wrong for the SubmitReplayGain() call. Closes https://github.com/MusicPlayerDaemon/MPD/issues/497